/* bootstrap默认样式更改 */
.btn-group-vertical{
    display:block !important;
}
.btn-group-vertical button{
    margin-bottom:10px;
}
.btn-group-vertical .dropdown-menu{
    min-width:0 !important;
    background:rgba(0,0,0,0.5);
}
.btn-group-vertical .dropdown-menu a{
    color:white;
}
.img-thumbnail{
    display:block !important;
}

/* css3滤镜样式 */
.blur {-webkit-filter: blur(4px);filter: blur(4px);}
.brightness {-webkit-filter: brightness(250%);filter: brightness(250%);}
.contrast {-webkit-filter: contrast(180%);filter: contrast(180%);}
.grayscale {-webkit-filter: grayscale(100%);filter: grayscale(100%);}
.huerotate {-webkit-filter: hue-rotate(180deg);filter: hue-rotate(180deg);}
.invert {-webkit-filter: invert(100%);filter: invert(100%);}
.opacity {-webkit-filter: opacity(50%);filter: opacity(50%);}
.saturate {-webkit-filter: saturate(7); filter: saturate(7);}
.sepia {-webkit-filter: sepia(100%);filter: sepia(100%);}
.shadow {-webkit-filter: drop-shadow(8px 8px 10px black);filter: drop-shadow(8px 8px 10px black);}